Title
Wasserstein Distributionally Robust Kalman Filtering.
Abstract
We study a distributionally robust mean square error estimation problem over a nonconvex Wasserstein ambiguity set containing only normal distributions. We show that the optimal estimator and the least favorable distribution form a Nash equilibrium. Despite the non-convex nature of the ambiguity set, we prove that the estimation problem is equivalent to a tractable convex program. We further devise a Frank-Wolfe algorithm for this convex program whose direction-searching subproblem can be solved in a quasi-closed form. Using these ingredients, we introduce a distributionally robust Kalman filter that hedges against model risk.
Year
Venue
Keywords
2018
ADVANCES IN NEURAL INFORMATION PROCESSING SYSTEMS 31 (NIPS 2018)
nash equilibrium,convex program,estimation problem,frank-wolfe algorithm,model risk,normal distributions,wasserstein distributionally robust kalman filtering
DocType
Volume
ISSN
Conference
31
1049-5258
Citations 
PageRank 
References 
1
0.35
11
Authors
5